Guard or shield



Aug. 15, R 1 BRlTTAlN, JR 1,922,076

GUARD 0R SHIELD Filed March 2 1, 1.928

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UNITED STATES PATENT OFFICE GUARD R SHIELD Richard J. Brittan, Jr., Bloomfield, N. J., as-

signor to General Motors Corporation, Detroit, Mich., a Corporation of New Jersey Application March 21, 1928. Serial No. 263,302

3 Claims. (Cl. 286-5) This invention relates to guards or shields and grooves 60 and 62 and two spaced collars 64 and comprises all thepfeatures of novelty herein d is- 66 are shown, the end collar 66 being of small diclosed. An object of the invention is to provide ameter than the other one. The side walls 68 and an improved guard or shield for preventing the '70 of the collar 64 converge outwardy and one side 5 entrance of foreign matter to the bearing bewall 72 of the collar 66 slants outwardly while 60 tween a shaft and a casing. Another object is to the other side wall 74 is substantially straight or provide improved devices for preventing the env vertical. Pressed on the cylindrical surface of trance of water to an axle box under all usual conthe shaft is the hub portion 76 of a generally coniditions. To these ends and also to improve gencal guard or shield '18. The shield flares outward- 10 erally and in detail upon devices of this character, 1y towards the casing and surrounds and encloses 65 the invention also consists in the various matters the collars 64 and 66. From the inner surface of hereinafter described and claimed. the shield, an annular projection or rib 80 ex- The invention, in its broader aspects, is not tends into the space between the collars. necessarily limited to the particular embodiment Water or other foreign matter falling on the selected for illustration in the accompanying shield is mostly diverted and drained' towards 70 drawing in which the hub, especially when the axle is stationary.

Fig. 1 is a vertical section of a car axle box and Whatever foreign matter works down the inner adjacent parts and Fig. 2 is a plan View of the box surface of the shield is arrested by the rib or pro- Wth adjacent parts in horizontal section. jection 80 and drains olf in the groove 62. Water The numeral 6 indicates a wheel hub mounted running down the inner end of the casing 24 75 on a shaft or axle 8 having a series of cylindrical drains off in the groove 60. When the shaft or surfaces 10, 12 and 14 of progressively decreasing axle is rotating rapidly, the shield acts as a slinger size. A sleeve 16 is held on the surface 14 by a to throw water or other foreign matter away split ring 18 and supports roller bearings 20 runfrom the casing. Water splashing upwardly from ning on a sleeve or lining 22 of an axle box or the wheel is divertedv by the lower portion of the 80 casing 24. The axle box or casing has an outshield. Thus the construction is such as to prewardly extending peripheral end fiange 26 to clude the admission of foreign matter to the caswhich an end cap 28 is bolted, the end cap having ing or box under all usual conditions. In some an inwardly projecting annular flange or retaininstances, the shaft may be the stationary mem- 30 ing ring 30 ttting the bore of the box or casing. ber and the casing may be the rotary member.

A thrust block 32 having a thrust surface 34 for I claim: the end of the axle is held in a recess of the end 1. In a device Vof the character described, a cap by a central bolt 36, removable spacing plates casing, a Shaft projecting in'O the Casing and 38 being interposed between the thrust block and journalled for rotation therein, the outer end of the bottom of the recess to adjust the play between the casing closely surrounding the shaft and havthe end of the shaft or axle and thethrust surface ing its exterior surface formed with a plurality 34. Lubricant is conveyed to the thrust surfaces of peripheral drain grooves alternating with outby a wick 40 which extends from a lubricant reserwardly extending annular projections, the provoir in the box, through a boss 42 in the flange jection nearer the end of the casing being of 40 or retaining ring 30, to a recess of the thrust block. smaller diameter than the next pIOjeCtiOIl, a fiar- Oil which collects on a rib 44 at the end of the ing Shield Outside the Casing and Surrounding the shaftis thrown into the retaining ring or flange projections to protect the casing' from foreign 30 and drains through a notch 46 to the bearings. matter, the shield having an internal annular DIO- The oil must then traverse the bearings before rejeCtiOn eXeIldIlg IIO the glOOVe betWeeIl tW0 45 turning to the reservoir through a vertical passage adjacent projections on the casing to obstruct the 48 and inclined return passage or core 50. The movement of foreign matter towards the shaft, axle box or casing has grease grooves at 52 makand the shield also being fixed to the shaft whereing a close joint with the cylindrical surface 12 of by consequent rotation of the shield with the the shaft, and the shaft has a rib 54 and groove shaft will tend to throw foreign matter outwardly 56 to arrest creeping oil and deliver it to the pasaway from the casing and its exterior drain sage 48. grooves; substantially as described.

The inner or rear end of the axle box or casing 2. In a device of the character described, a cas- 24 is provided with a series of circumferential ing, a rotary shaft projecting into the casing' and grooves alternating with collars or annular projournalled for rotation therein, the outer end of no jections. In the illustrated construction, two the casing closely surrounding the shaft and having its exterior surface formed with an open, peripheral drain groove facing outwardly away from the shaft, a shield outside the casing and peripherally enclosing the drain groove to exclude foreign matter from the groove, the shield having an internal annular projection extending inwardly to the outwardly facing drain ygroove to obstruct the movement of foreign matter towards the hub of the shield, and the shield also having its hub xed to the rotary shaft at the outer end of the casing whereby consequent rotation of the shield with the shaft will tend to throw foreign matter outwardly away from the casing and away from its exterior drain groove; substantially as described.

3. In a device of the character described, a casing, a rotary shaft projecting into the casing and journalled for rotation therein, the outer end of the casing closely surrounding the shaft and having its exterior surface formed with a peripheral drain groove open outwardly away from the shaft, one side wall of the groove being higher than the other side wall, a aring shield outside the casing and peripherally enclosing the drain groove and its high and low side walls to exclude foreign CERTIFICATE GF CORRECTION.

Patent No. 1,922, 076.

August l5, A1933,.

RICHARD J. BRITTAIN, JR.

It is hereby certified that the State of Incorporation of the assignee in the above numbered patent was erroneously described and specified as "New Jersey" whereas said State of Incorporation should have been described and specified as Delaware, as shown by the records ol assignments in this office; page 1, line 30, for "fittting" read fitting; line 57, for "small" read smaller; and line for "outwardy" read outwardly; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 19th day of June, A. D. i934.

(Seal) Bryan ML Battey Acting Commissioner oi Patents. 

